Aiming at the security issue to fulfill the complexity of power distribution communication access network in the context of energy Internet, a power-grid information security architecture model is proposed based on multi-technology fusion. First of all, the information security requirements for the power distribution network are analyzed including multi-service security and service scenarios complexity. Secondly, the proposed information security architecture model is depicted for the intelligent distribution communication network, which is based on the analysis of the information security. Finally, the model-related three-layer security access architecture is designed for the services in the power distribution network, which is of the better characteristics to ensure the information security of the power distribution network by multi-network coordination.